1662404043 has 8 divisors (see below), whose sum is σ = 2276445328. Its totient is φ = 1078316064.

The previous prime is 1662404027. The next prime is 1662404071. The reversal of 1662404043 is 3404042661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1662404043 - 2⁴ = 1662404027 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1662404043.

It is not an unprimeable number, because it can be changed into a prime (1662404083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7488196 + ... + 7488417.

It is an arithmetic number, because the mean of its divisors is an integer number (284555666).

Almost surely, 2^1662404043 is an apocalyptic number.

1662404043 is a deficient number, since it is larger than the sum of its proper divisors (614041285).

1662404043 is a wasteful number, since it uses less digits than its factorization.

1662404043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14976653.

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 1662404043 is about 40772.5893585384. The cubic root of 1662404043 is about 1184.6194587168.

The spelling of 1662404043 in words is "one billion, six hundred sixty-two million, four hundred four thousand, forty-three".